Premium Numerical Control High Precision AC Regulator AC Power Stabilizer Voltage Workshop

• Customization: Available
• Current Type: AC
• Phase: Three Phase
• Model NO.: KBTW
• Frequency Characteristics: 50/60Hz
• Usage: SVC, DBW, JIW
• Frequency: 50/60Hz
• Size: Small
• Iron Core Shape: Ring
• Power Source: 3 Phase AC
• Application Range: Hotel;Construction Site;Oil Field;Industrial etc
• Brand: Kingbao
• Capacity: 15-1000kVA
• Input Voltage: AC 380V ±15%
• Output Voltage: AC 380V ±2%
• Voltage Stabilizing Accuracy: ±1-5% Adjustable
• Voltage Regulation Mode: Three Phase Compensation Unified Regulation
• Protection Function: See The Parameter Table for Details
• Insulation Grade: Grade F
• Temperature Rise: ≤60°C
• Work Efficiency: ≥98%
• Design Life: 20 Years
• Insulation Resistance: ≥5MΩ
• Overload Capacity: The System Runs with 100% Excess Load for 1 Minute
• Work Temperature: -10~40°C
• Storage Temperature: -20-60°C
• Degree of Protection: IP20
• Transport Package: According to Customer's Requirement
• Specification: AC3P4W
• Trademark: KINGBAO or OEM
• Origin: China
• Package Size: 100.00cm * 50.00cm * 50.00cm
• Package Gross Weight: 1000.000kg

Product Description

Product Description

The KBTW Numerical Control High-Precision AC Stabilizer provides stable three-phase power for equipment requiring dependable voltage regulation.

Available in capacities from 15 to 1000 kVA, it operates with a three-phase, four-wire AC system at 50/60 Hz.

The unit accepts AC 380 V ±15% input and delivers AC 380 V ±2% output, with voltage stabilization accuracy adjustable within ±1% to ±5%.

When the input voltage fluctuation is within 10 V, the stabilizer responds in approximately two seconds. 

Its three-phase compensation and unified regulation design supports consistent system output.

Built-in functions include automatic and manual voltage regulation, phase-loss protection, overvoltage and undervoltage protection, short-circuit protection, and overload protection.

The stabilizer achieves at least 98% efficiency and can operate at 100% excess load for one minute.

It uses Grade F insulation, dry-air cooling, and an IP20 enclosure.

Under continuous full-load operation, the temperature rise of the windings and iron core is limited to 60°C.

Operating conditions include -10°C to 40°C working temperature, -20°C to 60°C storage temperature, and 30% to 90% relative humidity without condensation.

Electrical performance includes insulation resistance above 5 MΩ, an AC 2500 V withstand-voltage test between the coil and iron core, and an AC 3000 V electrical-strength test.

The product follows JB/T 8749.8-2014 and references EN 61558-2-4 and JEC-204 requirements.

With noise within 50 dB at one meter and a stated design life of 20 years, the KBTW series is suitable for long-term B2B power-conditioning applications where stable voltage, protection, and efficiency are essential.

Application

Product Name	Numerical Control High-Precision AC Stabilizer
Model	KBTW
Capacity Range	15–1000 kVA
Phase Configuration	AC 3P4W, three-phase four-wire
Frequency	50/60 Hz
Input Voltage	AC 380 V ±15%
Output Voltage	AC 380 V ±2%
Voltage-Stabilizing Accuracy	Adjustable from ±1% to ±5%
Reaction Time	2 seconds when the input-voltage variation is within 10 V
Voltage-Regulation Mode	Three-phase compensation with unified regulation
Regulation Functions	Automatic voltage regulation and manual voltage regulation
Protection Functions	Phase-loss protection, overvoltage protection, undervoltage protection, short-circuit protection, and overload protection
Insulation Grade	Class F
Load-Test Standard	EN 61558-2-4; JEC-204
Withstand-Voltage Test	AC 2500 V for 1 minute between the coil and iron core, with no abnormality
Temperature Rise	No more than 60°C for each winding and the iron core under continuous full-load operation
Insulation Resistance	Greater than 5 MΩ
Electrical Strength	AC 3000 V for 1 minute, with no abnormality
Operating Efficiency	≥98%
Overload Capacity	100% overload for 1 minute
Noise Level	≤50 dB at a distance of 1 meter
Storage Temperature	-20°C to 60°C
Working Temperature	-10°C to 40°C
Relative Humidity	30%–90%, non-condensing
Degree of Protection	IP20
Cooling Method	Dry-air cooling
Executive Standard	JB/T 8749.8-2014
Design Life	20 years

Company Profile

Kingbao Power – Premium Industrial Power & Workshop Solutions

20+ Years of Manufacturing Excellence | 2 Production Bases (40,000m²) | Full OEM/ODM Customization

At Kingbao Power, we design, engineer, and manufacture heavy-duty industrial power equipment and workshop auxiliary solutions tailored for critical automation, high-precision machining, and industrial facilities worldwide. Backed by over two decades of engineering expertise and two state-of-the-art manufacturing plants covering 40,000 m², we empower factories, panel builders, and OEMs with total power reliability and guaranteed on-time global delivery.

Core Product Portfolio

High-Efficiency Dry-Type Transformers (Isolation & Auto): Custom-engineered for voltage conversion, noise suppression, and power isolation across varied global grid standards (200V–690V).

Industrial Automatic Voltage Regulators (AVR, 15kVA–2000kVA): High-power contactless and servo-driven stabilizers designed for harsh grid fluctuations, delivering over 98% efficiency, zero waveform distortion, and instant response.

Precision Line & Load Reactors (AC/DC): Engineered for VFD drives, harmonic filtering, and motor/drive protection to ensure smooth continuous operation.

Industrial Applications & Co-Engineering

Our equipment is purpose-built for high-demand environments, including CNC machining centers, automated assembly lines, SMT lines, oil & gas facilities, medical imaging systems, and industrial robotics. Co-engineered to match the precise power specifications of global machinery leaders—including FANUC, Siemens, Mazak, Haas, Mitsubishi, DMG MORI, Okuma, and Brother—Kingbao Power protects your sensitive drives and spindles against power sags, spikes, and harmonic interference.

Engineered Quality & Tailored OEM/ODM Capability

Advanced Manufacturing: Built with VPI (Vacuum Pressure Impregnation) copper/aluminum windings, Class H insulation (180°C), and rugged IP20/IP23/IP54 NEMA-rated enclosures.
Flexible Customization: We offer full OEM/ODM customization—from tailored input/output voltages, compact enclosure footprints, and thermal protection sensors to integrated smart digital monitoring interfaces.
Fast Sampling & Support: Prototype samples in as fast as 7–10 days, supported by 100% factory testing.

COMPANY STRENGTHS

Certifications

Packaging & Shipping